From 1a5040b9d2c37789ff0d8839d0683ff25530a942 Mon Sep 17 00:00:00 2001
From: Mark Whitehorn <kd0aij@gmail.com>
Date: Mon, 25 Apr 2016 12:02:20 -0600
Subject: [PATCH] only call fsync in NUTTX builds

---
 src/modules/mavlink/mavlink_messages.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/modules/mavlink/mavlink_messages.cpp b/src/modules/mavlink/mavlink_messages.cpp
index da65411144..7ab2b508a0 100644
--- a/src/modules/mavlink/mavlink_messages.cpp
+++ b/src/modules/mavlink/mavlink_messages.cpp
@@ -441,7 +441,9 @@ protected:
 							PX4_WARN("mavlink logging disabled");
 						} else {
 							(void)fputs("\n", fp);
+#ifdef __PX4_NUTTX
 							fsync(fp->fs_filedes);
+#endif
 						}
 
 					} else if (write_err_count < write_err_threshold) {
@@ -460,7 +462,9 @@ protected:
 							fputs(": ", fp);
 							fputs(msg.text, fp);
 							fputs("\n", fp);
+#ifdef __PX4_NUTTX
 							fsync(fp->fs_filedes);
+#endif
 						} else {
 							PX4_WARN("Failed to open MAVLink log: %s", log_file_path);
 						}